EP 0936683 A4 20001122 - REFLECTION TYPE LIGHT EMITTING DIODE
Title (en)
REFLECTION TYPE LIGHT EMITTING DIODE
Title (de)
REFLEKTIERENDE LICHTEMITTIERENDE DIODE
Title (fr)
DIODE ELECTROLUMINESCENTE DE TYPE REFLECHISSANTE
Publication
Application
Priority
- JP 9800826 W 19980227
- JP 17169197 A 19970627
- JP 24919797 A 19970912
- JP 33569797 A 19971205
Abstract (en)
[origin: WO9900852A1] A reflection type light emitting diode which is constituted in such a way that a concave reflecting surface (18) having substantially a paraboloid of revolution is provided on the light emitting surface side of a light emitting element (11), and the center of the light emitting surface is positioned to the focal point of the reflecting surface (18). In addition, a radiant surface (19) is provided on the back side of the element (11), and a projecting section (21) which is protruded from the radiant surface (19) is formed on the periphery of the surface (19). Such a light emitting diode is manufactured by a transfer mold method in which the reflecting surface (18) is formed by means of a die and the radiant surface (19) is formed by means of a punch. When the diode is manufactured, no air layer remains in the part of the punch corresponding to the radiant surface (19), because the residual air on the upper surface of the punch gathers in the part of the punch corresponding to the projecting section (21).
IPC 1-7
IPC 8 full level
H01L 33/54 (2010.01); H01L 33/60 (2010.01)
CPC (source: EP)
H01L 33/54 (2013.01); H01L 33/60 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48247 (2013.01)
Citation (search report)
- [Y] EP 0450560 A2 19911009 - SUMITOMO ELECTRIC INDUSTRIES [JP]
- [Y] EP 0682374 A1 19951115 - EURATEC BV [NL]
- [Y] EP 0734077 A1 19960925 - IWASAKI ELECTRIC CO LTD [JP]
- [Y] EP 0400176 A1 19901205 - SIEMENS AG [DE]
- [A] US 5200367 A 19930406 - KO JUN S [KR]
- [A] JP S60193345 A 19851001 - MATSUSHITA ELECTRONICS CORP
- [A] AT 342679 B 19780410 - AMP INC [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 010, no. 297 (E - 444) 9 October 1986 (1986-10-09)
- See references of WO 9900852A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9900852 A1 19990107; EP 0936683 A1 19990818; EP 0936683 A4 20001122; TW 385557 B 20000321
DOCDB simple family (application)
JP 9800826 W 19980227; EP 98905698 A 19980227; TW 87104703 A 19980330